S-N Curve Modeling for Finite Life Range under the Assumption of Linearly Changing Scatter

Paper #:
  • 2014-01-0970

Published:
  • 2014-04-01
Citation:
Yingjie, Z. and Xuezhi, T., "S-N Curve Modeling for Finite Life Range under the Assumption of Linearly Changing Scatter," SAE Int. J. Mater. Manf. 7(2):454-464, 2014, https://doi.org/10.4271/2014-01-0970.
Pages:
11
Abstract:
Fatigue test data in finite life region are normally analyzed separately for each stress level because of varying scatters, while another method assuming equal scatters on all levels and thus unifying all data into one model is also welcome for its efficient usage of data. Combining the idea of the two methods, a new method that assumes linear change of scatter according to stress levels is developed in this paper. The algorithm derives from maximum likelihood estimation and general Newton's method. Monte Carlo method is used for theoretical validation and the new method is proved to be correct with the estimations. Finally a set of test data which shows a tendency of trapezoidal data distribution is analyzed and an S-N curve for finite life range is created. The new method has its advantage in certain situations so it's meaningful to add it to the alternatives of fatigue data analysis methods.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$28.00
Mail
$28.00
Members save up to 42% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Event
2018-04-10
Training / Education
2016-03-07